A 34-year-old woman, a cousin of gangster Neeraj Bawana, was injured after being shot at her residence in Bawana area on Monday, police officials said.
The incident comes almost a fortnight after her live-in partner was killed and she had escaped with a bullet injury.
The woman, Jyoti, was in a live-in relationship with one Amit, who was killed on October 6 by some unidentified assailants, the officials said.
Jyoti was also injured in that attack and a bullet had pierced through Amit's chest and hit her in the waist, they said.
On Monday, two men on a motorcycle stopped outside her home and asked her 16-year-old son whether she was present at her residence, they said.
While one of them stayed outside, the other man entered the house and shot at her.
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Jyoti was shot in her cheek in the presence of her 12-year-old daughter, the officials said.
She is currently undergoing treatment at the Maulana Azad Medical College, they said, adding that police are probing all angles, including that of honour killing.
It is suspected that Amit and she were targeted because they were in a live-in relationship, the police officials said.
Jyoti has two children from her first marriage and she left her first husband Satpal nine years ago, they added.